baber/WOPTO huggingface dataset:
Patent GB-916426-A (GB)
Title: Improvements in or relating to oscillators
IPC: H03L7/20
Filed: 1959-02-06
Abstract: 916,426. Automatic tuning arrangements. RACAL ELECTRONICS Ltd., and FORSYTH-GRANT, M. I. Feb. 2, 1960 [Feb. 6, 1959], No. 4190/59. Class 40 (5). [Also in Group XXXVIII] A variable-frequency oscillator 16 controlled by a tuning motor 21 is set to a predetermined frequency as indicated by the setting of a counter 19 by comparing its output as its tuning is varied from an initial value with that of a reference frequency source 13 in a mixer 15, each coincidence of the oscillator frequency with a harmonic of the reference frequency producing a pulse which is applied to the. counter 19 which delivers a control signal to programming means 20 to terminate the variation of the oscillator frequency when a predetermined number of pulses corresponding with the setting of the counter have been applied thereto- As shown, the reference frequency source 13 provides 100 kc/s., 10 kc/s. and 1 kc/s. outputs. The oscillator is initially set to a reference value of frequency, e.g. 1 mc/s., and the switches 23 and 24 are arranged as shown. The 100 kc/s. output from source 13 is passed through pulse-shaping circuit 14 so as to apply a signal rich in harmonics to the mixer 15. The oscillator tuning, is increased steadily by means of motor 21 energized through resistor R and as its frequency passes through 1100 kc/s. a low-frequency output passes through filter 17 to the pulse-shaping circuit 18 so that a pulse is applied to the counter 19. Further pulses are similarly applied to the counter as the oscillator frequency passes through 1200 kc/s., 1300 kc/s. and so on, until the number of pulses corresponding to the initial setting of the highest decade stage of the counter has been received. Thereupon a control signal is applied to the programming means 20 to step the switches 23, 24 to their next position in which harmonics of the 10 kc/s. output are heterodyned with the oscillator and the motor is energized through resistor 10 R to rotate at one-tenth of its original speed. This continues until the previously set number of tens of kc/s. has been counted at 19, whereupon the switches 23, 24 are moved to their third position in which the motor speed is reduced by a further factor of ten and units of kc/s. are counted by the counter 19. When the desired number has been counted a further signal is sent to the programming means to arrest the motor 21 and to close switch 25 to connect an automatic frequency-control circuit 22 to the oscillator to maintain its output frequency accurately locked to the selected harmonic of the 1 kc/s. reference-frequency source. For interpolation between successive harmonics of the 1 kc/s. source a further adjustable precision oscillator arranged in the A.F.C. loop may be provided, this having the effect of providing an effective displacement between the reference frequency and the oscillator 16 and so causing a resetting of the oscillator frequency. It is stated that the timing motor may be replaced by electronic tuning means.
Patent GB-788862-A (GB)
Title: Apparatus for the recording or reproduction of signals on or from a tape or band record carrier
Inventor: FRIES GUSTAV
IPC: G11B15/61
Filed: 1955-02-11
Abstract: 788,862. Television. INGLESBY, J. C. VREDENBURG-. Feb. 13, 1956 [Feb. 11, 1955], No. 4216/55. Class 40 (3). [Also in Group XXXVIII] To produce, or reproduce from, a tape 2, Fig. 3, having a signal track composed of substantially parallel sections A<SP>1</SP>-E<SP>1</SP>, A<SP>2</SP>-E<SP>2</SP>, &c. extending diagonally completely across the tape so that the distance longitudinally of the tape between the opposite ends of each section is greater than that between successive sections, the tape 2 is scanned by a recording or reproducing element 14 rotating about the axis of a non-rotating cylinder 3, Fig. 2, round which the tape is passed in a helical turn and which is disposed at an angle to the axis of the tape as it approaches and leaves the cylinder. The element 14 may rotate externally of the cylinder 3 especially when it is a lamp or cathode-ray device producing a light beam modulated for recording or of constant intensity and associated with a photo-electric cell for reproduction, the tape being a photographic film or paper, but, as shown, the element is a magnetic head 14, Fig. 5, on an arm 24 adjustably counterweighted at 23, spring-loaded at 27 and pivoted on a crank-arm 26 of a driving-shaft 13 also having an adjustable counterweight 33. The head 14 contacts a magnetizable inner layer on the tape 2 through a gap 12 halving the cylinder 3. The outer surface of the tape 2 may be marked in centimetres or time units or have index marks registering with a fixed mark, on the cylinder when the head 14 passes the tape edges. Means may be provided to automatically advance or retard the tape feed relative to the head rotation to compensate for tape stretch or shrinkage. The tape 2 passes from a supply spool 1, Fig. 2, over a guide roller 4 and round the cylinder 3 to feeding rollers 5, 16 and a take-up spool 6 driven from the roller 5 by a friction drive 8. The shaft 13 is driven by a synchronous motor via a coupling 13a and drives the roller 5 via gearing 17. The roller 5, Fig. 7, is of metal and the roller 16 of elastic synthetic resin or hard rubber and urged thereagainst by a spring 31 and lever 32 and by the tape tension. There may be two or more heads 14 at different angular positions around the shaft 13, in the same plane or laterally displaced. The tape 2 may lap the cylinder 3 by 360 degrees or by slightly more, e.g. when laterally displaced multiple heads are used. In Fig. 9 five heads 14a ... 14e are employed for television recording, giving a sound waveform track, a synchronizing waveform track and three video colour component waveform tracks. The heads 14a . . . 14e which are loaded by springs (not shown) are secured to shafts 40 having knife-edge bearings and carrying adjustable counterweights 23. Perforated tapes 2 driven by sprockets may be used, and the perforations may be situated where interruption of the signal track thereby would not be detrimental, e.g. at the ends of picture lines or frames in television signals.
Patent GB-686464-A (GB)
Title: An improved regulatior for dynamo-electric generators
IPC: H02P9/20
Filed: 1950-02-18
Abstract: 686,464. Automatic voltage control systems. NEWTON BROS. (DERBY), Ltd., and WILLIAMS, B. J. Feb. 19, 1951 [Feb. 18, 1950], No. 4230/50. Class 38 (iv). Two or more D.C. generators are connected in parallel to a supply main, each generator having a carbon pile voltage regulator, and each regulator having a normal control winding and an opposing winding connected across the mains in series with a master carbon pile regulator which provides sensitive regulation of the mains voltage. The electromagnets of the carbon pile regulators 7, 8, in series with the fields of the generators 1, 2, carry shunt windings 11, 12, current windings 15, 16 (to ensure load sharing) and opposing windings 17, 18, in series with the master pile 19, the resistance of which is increased by increased excitation of its voltage coil 21. The coil 21 is shunted by a condenser and inductance in series to reduce transient effects. Peferenee has been directed by the Comptroller to Specification 589,474.
Patent GB-396640-A (GB)
Title: Improvements in multi-stage printing and like operations, especially for articles ofirregular shape
IPC: B41F19/06
Filed: 1933-02-11
Abstract: 396,640. Making printers' apparatus. CELLULOID CORPORATION, 290, Ferry Street, Newark, New Jersey, U.S.A. Feb. 11, 1933, No. 4257. Convention date, Feb. 11, 1932. Drawings to Specification. [Class 83 (ii).] A set of dies for use in multi-colour embossing and like processes is prepared by forming corresponding positioning-holes in a master sheet and a number of die blanks, engraving the design on the master sheet, transferring the design therefrom to the blanks in identical positions with the aid of the positioning-holes, and removing from each blank the portions that are not to be impressed thereby. The positioning-holes, which are drilled in a master jig, are preferably in the form of pin holes and dowel holes, dowel pins being fixed in the latter. The design is engraved on the master sheet which is formed of thin flexible material such as pyroxylin or cellulose acetate, and is rolled over with ink or grease which will not penetrate into the crevices of the engraving. Each die blank is coated with a mixture of chalk and water, and the inked engraving is pressed down on the blanks, correct positioning being obtained by pins inserted in the holes. The chalk is removed except at the parts corresponding to the engraving, the blanks are then coated with lacquer to preserve the chalk marks, and the parts of each die which correspond to the colours not to be impressed thereby are removed.
Patent GB-1148427-A (GB)
Title: Substituted piperidines
IPC: A61K31/00
Filed: 1968-01-26
Abstract: 1,148,427. Substituted piperidines. BOEHRINGER INGELHEIM G.m.b.H. 26 Jan., 1968 [26 Jan., 1967], No. 4319/68. Heading C2C. Novel compounds of the skeletal formula wherein R 1  is an alkyl group with 1-3 carbon atoms, R 2  represents a hydrogen, chlorine, or bromine atom or a methyl or methoxy group, are prepared by reacting compounds of the skeletal formula in which R 1  is as defined above, with a 4-chlorobutyrophenone of skeletal formula in which R 2  is as defined above, to produce the desired compounds, which, if desired, can then be converted into the acid addition salts thereof. Pharmaceutical compositions containing the above compounds which show a strong analgesic activity without a substantial addictive effect, are administered orally, rectally or parenterally.
Patent GB-1000062-A (GB)
Title: Improvements in or relating to the manufacture of opaque glass
IPC: C03C4/00
Filed: 1962-02-05
Abstract: Opaque or semi-opaque glass with a low coefficient of expansion consists essentially of the ternary system SiO2, B2O3, M2O (M = Li, K, Na) to which an opacifier consisting of one or more of ZnO, MgO, CaO, BaO, NiO, MnO, CoO, CnO has been added, the glass having the molecular proportions SiO2 + B2O3 75-95%, with B2O3:SiO2 0.1 to 0.6; opacifying oxide 3-25%; M2O 1-7 with M2O:opacifier being 0.1 to 1 for Na, K and 0.07 to 1.5 for Li.  Al2O3 may be present less than 1%. Known opacifiers may also be added in an amount, not in itself causing opacity, e.g. F up to 4%, P2O5 up to 2%, CeO up to 5%.  If SO3 or Cl are present the amount must be less than 0.2%.  If not opaque on production, the glass may be rendered opaque by suitable heat treatment.  A decorative enamel may be applied and fired during this heat treatment.  A number of examples are given.
Patent GB-306277-A (GB)
Title: Improvements in and connected with chain grate and like stokers
IPC: F23H11/18
Filed: 1928-02-11
Abstract: 306,277. Brown, A. Hall-, Morton, L., and Vickers Boiler Co., Ltd. Feb. 11, 1928. Grates, cleaning and clearing.-A clinker dam for use with chain grate and like stokers comprises a series of adjustable members A fulcrummed on a bar B and provided with forwardly projecting renewable noses C. The tail portions A<1> of the members are engaged by manually adjustable cams D mounted on a shaft E extending thrcugh the furnace wall and provided with a handle F for adjusting the. position of the members A. The noses of the members A are. disposed over the region where the links of the grate begin to, open in passing around the rear drum of the grate.
Patent GB-181057-A (GB)
Title: Improvements in or relating to change speed gear for motor vehicles
IPC: F16H3/38
Filed: 1921-02-07
Abstract: 181,057. Mitchell, A. R. Feb. 7, 1921. Controlling variable-speed gearing of the kind in which spur or clutch teeth are brought to equal speeds before engagement by auxiliary spur or friction gearing. The auxiliary gear is operated by a preliminary movement of the main gearoperating lever. This lever 15 is secured to a bar 98 having pins 96, 97 by which it can selectively engage one of three pivoted plates 65, 66, 94. A lost-motion device 82, 83, Fig. 2, is interposed between the plates 65 &c. and the levers 84 &c., which operate the main gear so that the first angular movement of the lever turns the selected plate only, and so operates the auxiliary gear. The main gear is operated through selector bars 88, 86, 91 and the auxiliary gear through cams 58, 59, &c., levers 52 - - 55, and cables 44. The auxiliary gear comprises a set of toothed or friction gears 24 - - 27, Fig. 4, on an extension 16 of the main countershaft 4, and a set 20 - - 23 on a. shaft 17 driven constantly through a hair 18, 11 from the main driven shaft 2. These are connected in pairs by idlers 31 - - 34 upon levers 35 - - 38, which are advanced singly through toggles 41 and the cables 44. There is a clutch 47 for bringing in the auxiliary gear operated through a lever 49 and cable 50 from a frame 63 which is operated along with any one of the. levers 52 - - 55.
Patent GB-210297-A (GB)
Title: Improvements in metal reinforcements for concrete road foundations and the like
IPC: E04C5/06
Filed: 1923-02-15
Abstract: 210,297. British Reinforced Concrete Engineering Co., Ltd., and Hall, E. B. Feb. 15, 1923. Reinforced concrete. -A fabric reinforcement for concrete road foundations, floors, piers, gangways, &c. and of the kind having top and bottom reinforcing wires, consists of longitudinal and transverse units a, b of triangular, rectangular, or channel shape and formed of large-mesh wire fabric, the units b being threaded through the units a. Each unit may be separate, or a number of parallel units may be formed by corrugating a length of fabric. Electrically welded or other fabric capable of being folded longitudinally may be used. The units are assembled together on the site and may be connected by wire binding.
Patent GB-220115-A (GB)
Title: Improvements in or relating to tyres
IPC: B60C7/28
Filed: 1923-02-15
Abstract: 220,115. Cornbrook Rubber Co., Ltd., and Ferguson, J. Feb. 15, 1923. Drawings to Specification. Tyre attachments to rims.-Means for joining the ends of a solid rubber strip to form an endless tyre comprises a crimped wire engaging with helical coils of opposite formation embedded in the tyre so that \rotation of the connecting wire draws the ends together. Alternatively the embedded wire may be crimped and the connecting wire is then helically wound in opposite directions. The rotation of the connecting wire may be effected by a small wire tommy engaging a loop in the centre of the wire.
Patent GB-1179592-A (GB)
Title: Improvements in or relating to Systems for Distributing Television Programmes by Cable
Inventor: BURKE ALAN SAMUEL
IPC: H04N9/44
Filed: 1966-10-27
Abstract: 1,179,592. Wired television; automatic phase control. BRITISH RELAY Ltd. 29 Jan., 1968 [27 Oct., 1966], No. 4582/68. Divided out of 1,179,591. Headings H3A and H4R. In a multi-channel wired television distribution system, e.g. of Specification 1,179,591, the signals of all channels except a reference channel are passed through respective variable delay lines the delays of which are controlled by a phase-sensitive device to maintain the line frequencies of all the channels in a predetermined phase relation. The Figure shows a system for two channel signals in which a reference video signal VID.1 1 is applied to input terminal 10 which is directly connected to output terminal 12 while a second video signal VID.2 is applied to terminal 11 which is connected by the variable delay system, including tapped lines 20, 25, 28 and 32, to an output terminal 13. The video signals at output terminals 12 and 13 are fed to respective similar circuits 52 and 51 where the line synchronizing pulse is extracted by synch separator 53 and used to fire a monostable circuit 56, in order to eliminate the effects of the twice line frequency frame synchronizing signal. The monostable output is used to switch a bi-stable circuit 58 and the outputs of the two bi-stable circuits are fed to AND gate 61 to produce a pulse at line frequency on line 62 whenever there is a phase difference between the line synchronizing signals of the two video signals VID.1 and VID.2. In addition the signal on the output of bi-stable 58 is fed to a monostable circuit 64 to produce a pulse which is compared with the output of AND gate 61 in bistable 65 to produce a signal on line 68 or 69 dependent on whether the output from bi-stable 58 leads or lags on the output from bi-stable 60. The signals on leads 62, 68 and 69 are fed to shift registers 103 to 104 to cause stepping of these registers, and hence of switches 30 and 38, to adjust the delays of lines 28 and 32 in a way to reduce the phase difference between the two video signals, providing a coarse adjustment of the delay system. In addition the output from the monostable 56 is used in gate 70 to feed the chrominance sub-carrier bursts on the back porch of the video signals to synchronize an oscillator 72. The outputs of the two oscillators corresponding to the chrominance sub-carriers of the VID.1 and VID.2 signals are compared in phase detector 80 the output from which, after filtering and gating, produces a signal on line 82 representative of the phase error. The toggle 86 is set in accordance with the direction of error and the gate 90, by combining the phase error with the line synch. pulse, produces an error pulse on lead 91. The signals on leads 87, 88 and 91 are fed to shift registers 101 and 102 to control the setting thereof and hence of the switches 22 and 26 to provide fine adjustment of the delay given to the VID.2 signal. The system shown provides a total delay equal to one line, for a PAL system the maximum delay necessary in two lines.
Patent GB-242136-A (GB)
Title: Improvements relating to hinges
IPC: E05D3/06
Filed: 1925-02-19
Abstract: 242,136. Mitchell, J. G., and Leslie, W. Feb. 19, 1925. Double and multiple hinges for doors, windows and other articles comprising two leaf members with an intermediate member which remains stationary when the door is opened in one direction and moves when the door is opened in the other direction, are provided with a transversely-disposed casing containing a spring or other controlling device which acts on the outer hinge members in a direction perpendicular to their axes. The control device may be a coiled spring, a solid piston unit, or both. As shown in Figs. 1 and 3<a>, one or more casing members 5 each containing a spring member 10 are hingedly connected about the pins 6, 7 to the plates 3, 4 secured respectively to the door 1 and frarne 2. In addition to the projections 3<a>, 4<a>, 5<a> on the hinge members engaged by the pins 6, 7, cammembers 3b, 4b of the members 3, 4, engage pistons 8, 9 between which are springs 10. When the door is opened to one side, as shown, the projections 4b press on the pistons 8 so that the casing 5 is locked to the butt plate on the door. Instead of the coil springs 10, solid or hollow pistons 12, Fig. 6, may be used for the hinges, with cam members 13. Hinges may be made up of both spring and solid piston units.
Patent GB-718298-A (GB)
Title: Improvements in or relating to gas sealing joints for pipes and the like
Inventor: SENESCHALL RONALD
IPC: F04D13/04
Filed: 1952-02-21
Abstract: 718,298. Pipe joints. ROLLS-ROYCE, Ltd. Feb. 3, 1953 [Feb. 21, 1952], No. 4663/52. Class 99 (1). A joint in which a spigot member 13 carrying a sealing ring 14 engages within a socket member 12 has a coupling device comprising a number of channel-section clamps 20 which embrace shoulders 12b, 13b on socket and spigot respectively, and are retained radially by the engagement within dovetail grooves 20b of oppositely extending chamfered flanges 15, 17b on the socket. The flange 17b has gaps 19 to allow each clamp to be moved radially and then circumferentially into clamping position in which it is locked by a U-shaped locking member 21 whose arms 21a engage slots 18 in the flages 15, 17b. The locking member is carried by a projection 20d of the clamp, and is adjusted by a nut 23 of a bolt having a nut-retaining head 24.
Patent GB-538242-A (GB)
Title: Improvements in or relating to electric fuse-boards or boxes, switch boards or boxesand the like
IPC: H02B1/00
Filed: 1940-03-13
Abstract: 538,242. Switch boxes WALSALL CONDUITS, Ltd., MILLARD, A. E., and WHALLEY, W. March 13, 1940, No. 4678. [Class 38 (v)] [Also in Group XXXVI] A box for fuses, switches &c. is made from sheet metal, the body and cover of the box being stiffened by strapping members to which the fastenings for the box are secured. In one form U-shaped straps 20 are riveted or spotwelded to the body 10, and straps 21 to the cover 17, castings 23, 24 being riveted to the straps to form with bolts 22. the fastenings for the box. The castings may have a recessed body to fit over the strap. The bolts at one side may have nuts 32 above and below the castings 23 so as to constitute hinges. In a modification, the straps are made from channel members, that on the cover being stiff enough to form the slots 31 directly in the strap, and the sides of the channel member on the body taking the place of the lugs 27 for mounting the bolts 22. In another modification, Fig. 5, the straps 44 on the cover have holes through which are passed either the screwed ends of fastening members 46 fixed to the sides of the body, or studs screwing into the ends of the members 46 which are bent horizontally. The joints of the box may be welded and conduit attachments 36 and other fittings may be riveted or welded to the walls.
Patent GB-869675-A (GB)
Title: Improvements relating to drainage devices
Inventor: DAVIDSON ALISTAIR RITCHIE
IPC: E03C1/264
Filed: 1959-02-10
Abstract: 869,675. Drainage outlets. BURN BROS. (LONDON) Ltd. Feb. 10, 1960 [Feb. 10, 1959], No. 4682/59. Classes 20(4) and 107 A drainage outlet for incorporation in a roof or floor having a waterproof covering of, e.g. asphalt or roofing felt, comprises an outlet pipe 3 with hopper-shaped entry 4, a shallow frame 7 secured to the entry by a hexagonal headed screw 12 which passes through a hole 11 in a crosspiece 9 forming part of the frame and is received in a tapped hole 14 in a similar crosspiece 13 forming part of the entry 4 and a flat grating 6 which is secured to the frame by a screw 16 received in a tapped hole in the head of screw 12. The waterproof covering is lapped over part of the entry and is gripped between the inner surface of the entry and the outer surface of the frame. The grating may be domed 20 or of pyramidal form.
Patent GB-355186-A (GB)
Title: Improvements in speed indicators for vehicles and the like
IPC: G01P1/10
Filed: 1930-02-12
Abstract: 355,186. Speedometers. REY, C., Cransac, Aveyron, France. Feb. 12, 1930, No. 4704. Convention date, Feb. 28, 1929. Void [Published under Sect. 91 of the Acts]. [Class 106 (iii).] A group speed signalling device for vehicles, aircraft, &c., comprises a speed indicating dial 2 over which rotates a conducting pointer 3 having a brush 4 which makes successive contacts with insulated contacts 5, 5a, &c., to actuate the speed signalling devices 6, 6a, &c., which may be electric bells of different pitch, e.g. forming a musical gamut, and/or coloured electric lights. The lights may be disposed on the speed-indicating dial or on a dial or disc mounted on the radiator cap or other 'point of the vehicle. The contacts 5, 5a, &c., may be replaced by conducting sectors to give continuous signals. In a modification, shown in Fig. 3, the spindle of the speed indicating pointer carries a switch arm 11 carrying an electromagnet 13 whose magnetic circuit is closed in moving below contacts 15, 15a, &c., to actuate the signalling devices 16, 16a, &c., in turn. In a further modification the pointer or arm co-operates with an adjustable resistance to change the current to the motor of an electric horn, siren or the like to continuously change the pitch of the emitted note with change of speed.